USFS National Forest System Trails · Sawtooth National Forest · Idaho · Updated June 2026
Iron Mountain Trail (USFS trail 7050) is a 10 mi trail in Sawtooth National Forest, Idaho. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Iron Mountain Trail?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Accepted but discouraged | — |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | year-round |
| Class 2 e-bike (throttle, 20 mph) | Allowed | year-round |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | year-round |
Zooming out: across Sawtooth National Forest, 59% of rideable trail miles are open to mountain bikes — a Bike Access Grade of B.
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About this trail
In Sawtooth National Forest, Idaho, Iron Mountain Trail (USFS trail 7050) covers 10 mi of National Forest System trail. Everything below comes straight from the US Forest Service National Forest System Trails dataset — length, surface, slope-derived difficulty, and the specific bike and e-bike designations on record — so you can check legality before you load up. The tread is mapped as native material. USFS slope data puts it in the Advanced band (grade band 12-20%), meaning a steep climb — keep in mind this measures steepness, not trail technicality. For traditional mountain bikes, use is discouraged according to USFS data. On the electric side, Class 1, Class 2, Class 3 e-bikes are also designated — Class 1 being pedal-assist only, Classes 2 and 3 adding a throttle and higher assisted speed. The route is mapped as USFS Trail Class 3 on the agency's 1-to-5 development scale, where 1 is the most primitive, minimally maintained tread and 5 is the most developed. For day-of certainty on closures or seasonal orders, check directly with the ranger district, since this reflects the USFS data as of the latest refresh.
Frequently asked questions
- Can you mountain bike on Iron Mountain Trail?
- Mountain-bike use on Iron Mountain Trail is discouraged in USFS records, though Class 1 e-bike use is designated. Confirm current rules with the managing ranger district.
- Are e-bikes allowed on Iron Mountain Trail?
- Class 1, Class 2, Class 3 e-bikes are designated on Iron Mountain Trail in the USFS data.
- How long is Iron Mountain Trail?
- Iron Mountain Trail measures about 10 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Iron Mountain Trail?
- USFS data records the tread surface of Iron Mountain Trail as native material.
- How difficult is Iron Mountain Trail?
- Its grade-based difficulty is Advanced (grade band 12-20%), derived from USFS slope data. This reflects steepness, not technical mountain-bike difficulty.
How we read this data
Grade-based difficulty above is the USFS grade (route steepness), not a technical mountain-bike rating — a gentle-grade trail can still be rocky or technical, and vice versa. Bike and e-bike status come verbatim from the USFS managed-use fields for this trail; we never infer access we can't cite. See our methodology for how the dataset is built and what each field means.
Where it is
Approximate location of Sawtooth National Forest (USFS trail geometry isn't mapped).
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